Deep-well pump.



M. T. & M. C. CHAPMAN.

DEEP WELL PUMP.

APPLICATIONIFILED MAR. 10, 1909.

1,149,633. Patented Aug. 10, 1915.

8 SHEETS-SHEET I.

M.'T.-& M. C. CHAPMAN.

DEEP WELL PUMP. KPPLICATION FILEb MAR. 10, 1909- Patented Aug. 10, 1915.

8 SHEETS-SHEET 2.

M.T. & M. C. CHAPMAN.

DEEP WELL PUMP. APPLICATION FILED MAR. to. 1909.

1,149,633. Patented Aug. 10,1915. I

8 SHEETSSHEET 3.

M. T. & M. c. CHAPMAN.

DEEP WELL PUMP.

APPLICATION FILED MAR. I0, 1909 1,149,633. Patented Aug. 10,1915.

8 SHEETSSHEET 4- M. T. & M. C. CHAPMAN.

DEEP WELL PUMP.

APPLICATION FILED MAR. 10. 1909.

Patented Aug. 10, 1915.

8 SH EETSSHEET 5.

II! If f LIIIIIIII! I I 1 :Illll'f!" MLT. & M. C. CHAPMAN.

DEEP WELL PUMP. APPLICATION FILED MAR.10, 1909.

1,149,633. Patented Aug. 10, 1915.

8 SHEETSSHEET 6.

@ ffi/fi M. T. & M. C. CHAPMAN.

DEEP WELL PUMP.

APPLICATION FILED MAR. 10. 1909.

Patented Aug. 10, 1915.

8 SHEET SSHEET 7.

M. T & M. C. CHAPMAN.

DEEP WELL PUMP.

APPLICATION FILED MAR. 10, 1909.

1,149,633. Patented Aug. 10,1915.

8 SHEETS-S H-EET 8.

Mg Z W, 1 M c M STATES PATENT OFFICE.

MATTHEW T. CHAPMAN AND MARK G. CHAPMAN, OF AURORA, ILLINOIS, .ASSIGNORSTO THE AMERICAN WELL WORKS, OF AURORA, ILLINOIS, A CORPORATION OFILLINOIS.

DEEP-WELL PUMP.

Application filed March 10, 1909.

To all whom it may concern Be it known that we, MATTHEW T. CHAP- AN andMARK C. CHAPMAN, citizens of the United States, residing at Aurora, inthe county of Kane and State of Illinois, have invented certain new anduseful Improvements in Deep-WVell Pumps, of which the following is aspecification, reference being had to the accompanying drawings.

Our invention relates to pumps for raising water from deep wells, andhas to do more particularly with pumps of the centrifugal type.

The object of our invention is to provide a new and improved pump bywhich a larger amount of water may be pumped in a given time or by agiven expenditure of power. To this end, it consists in the improvementshereinafter described and pointed out in the claims.

In the accompanying drawings,Figure 1 is a sectional View, illustratingour improved pump; Fig. 2 is a cross-section, on line 22 of Fig. 1,illustrating the means for centering and supporting the shaft bearings;Fig. 3 is a section on line 33 of Fig. 1, illustrating the constructionof'the lower end portion of the pumping mechanism; Fig. 4 is a view,showing a motor for driving the operating pump; Fig. 5 is an enlargeddetail, being a vertical section on line 55 of Fig. 6, illustrating thestationary portion of the water-elevating mechanism; Fig. 6 is across-section on line 6-6 of Fig. 5; F i'g. 7 is a plan View oftherotary portion of the waterelevating mechanism; Fig. 8 is ahorizontal section on line 88 of Fig. 11; Fig. 9 is a detail, being apartial sectionon line 9'9 of Fig. 7 Fig. 10 is an inverted plan view ofthe part shown in Fig. 7; Fig. 11 is a vertical section on line 1111 ofFig. 7; Fig. 12 is a partial sectional'view showing the upper portion ofthe pump; Fig. 13 is a vertical section showing a modified onstructionof the coupling devices; F ig. 14 is a horizontal section on line 1 l14of Fig. 13; Fig. 15 is an enlarged side view of the spider shown inFigs. 13 and 14; Fig. 16 is a vertical section showing a modification;'

Fig. 17 is an enlarged vertical section showing still anotherconstruction of the coupling devices; Fig. 18 is a cross-section on line1818 of Fig. 17 Fig. 19 is a side view of the form of spider shown inFigs. 17 and Specification of Letters Patent.

Patented Aug. 10, 1915.

Serial No. 482,517.

18; Fig. 20 is an enlarged sectional view of a modified form ofpump-cylinder and impeller; Fig. 21 is a cross-section on line 21-21 ofFig. 20; Fig. 22 is a cross-section on line 22-22 of Fig. 20, lookingup; and Fig. 23 is a cross-section on line 23-23 of Fig. 20, lookingdown.

Our improved pumping mechanism is in the nature of a centrifugal turbinepump, since one or more runners or impellers in the nature of turbinewheels areemployed in connection with fixed inclined blades to force thewater up, the runner blades acting by their rotation to throw the wateroutward against the stationary inclined blades and thereby compel it torise through the pump cylinder. Suitable provision is made to counteractthe downward pressure on the runnersso that such pressure is neutralizedsoon after the pump is put in service. The several runners are mountedon a common shaft vertically disposed in a-suitable cylinder, its lowerend being mounted in a bearing which centers andguides it. Intermediateguides and bearings are also provided, and at the lower end of the shaftthere is a water piston which is fitted in a suitable cyllnder, to whichwater is admitted under pressure equal to that of the column of waterupon the runners, the water below said water piston acting in an upwarddirection so as to substantially neutralize the downward pressure of thewater in the pump cylinder, thus.causing the shaft to 1'0- tate freely.The shaft is rotated'by power applied to it near its upper end, eitherby a belt. or by a direct-connected motor and is vertically adjustableto compensate fol wear, as hereinafter described. The upper portion ofthe pump shaft is inclosed by a sleeve or tube so that the water in theWell does not reach it, the water being discharged through a suitableoutlet which connects with the upper end of the pump cylinder.

Referring to the drawings for a description of the particularembodiments of our invention therein illustrated,12 indicates a tube,which, for convenience, will be termed the well-tube as it extends downinto the Welland forms a conduit :for conducting the water raised 'up tothe surface where it is dischar ed through an elbow or other outlet 13WhlCll, as shown in Figs. 1 and 12, connects with the upper ul'lCl ofthe well-tube 12. It will be understood that the well-tube is made up ofany desired number of sectionsv which may be united by plain couplings 11 shown in Fig. 1, but are best united by our improved couplingshereinafter described.

Referring now more particularly to the construction shown in Figs. 1 to11, 15 indicates a base-plate which supports the portions of themechanism which are above ground, as shown in Fig. 1.

16 indicates several tubular sections, which will be termed pumpcylinders, since the pumping mechanism operates in them. Any suitablenumber of pump cylinders may be employed, depending on the depth of thewell, the volume of water to be pumped, or the quantity of water to bepumped in a given time. Said sections are alike and are fitted togetherso that the several units when united serve to make up a sectional pumpcylinder. The several sections may be secured together in any suitableway, as by bolts. They are adapted to be lowered into the well, theuppermost cylinder 16 being secured to the end of the well-tubepreferably by means-of a screw collar 17 which screws upon the lower endof the welltube 12.

18 indicates a bottom section or cylinder, which is secured to thelowermost cylinder 16 and is provided with a bearing forthe lower end ofthe shaft, as will be hereinafter described. 1

19 indicates the pump shaft, which is a vertically-(llisposed shaftmounted centrally in the wel -tube and extending from above the grounddown to the bottom section 18. Said shaft is preferably solid, but maybe tubular, if desired, and is composed of sections united by couplings20, as shown in 4 Fig. 1. At its upper end it is provided with a nut. 21preferably secured thereto by a setscrew 22, as shown in Fig. 1, saidnut bearing on a top bearing-plate 25 which rests on bearing-balls 24which in turn rest on a plate 25 carried by an adjusting-plate 26.

Said adjusting-plate 26 screws upon a head 27, which in turn is carriedby a framework 28 resting on the base-plate 15. Thus it will be seenthat the shaft 19 is suspended upon the balls 24 by means of the nut 21.The latter is preferably provided with a cap 29 which incloses andprotects the ball bearings resting on the upper edge of theadjusting-plate 26. By screwing the adjusting-plate 26 up or down,obviously the shaft 19 may be raised or lowerd to' compensate for wear,as hereinafter described.

In order to lock the adjusting-plate 26 in its different positions, aset-screw 30 is provided, as shown in Fig. 1, but any other suitablemeans for the purpose may be employed.

The lower end of the shaft 19 is mounted in a bearing sleeve 31 carriedby radial arms 32 supported by the bottom section 18, as best shown inFigs. 1, and 3, said arms being in the lower.portion of a cylinder 33,which is provided in said section 18, as shown. The lower portion ofsaid cylinder is tapered downwardly and inwardly toward the center whereanopening 34: is provided to permit sand and other similar particles toescape. The upper portion of said cylinder receives a piston 35 whichfits it the upper and lower ends, respectively, .of

the bearing sleeve 36, the tube 38 extending up through the elbow 13 andbeing provided with a suitable cap 40. The latter tube serves to keepthe dirty water from grind ing or cutting the joints or bearings of theshaft 19. A stuffing-box 41 prevents the escape of water where said tubepasses through said elbow. The lower end of the tube 39 extends down tothe upper end of the cylinder 16, where it is connected with part of thewater-elevating mechanism, as hereinafter described. In the drawings Wehave shown two sleeves 38 39, but a greater number may be employed, ifdesired, de-

pending on the depth of the well, -it being understood that the shaft 19is inclosed by said tubes which separate the upper portion thereof fromthe water in the well-tube 12.

The shaft 19 may be rotated by any suitable mechanism, as, for example,by means of power applied through pulleys 42, as shown in Fig. 1, or bya motor 43 mounted directly upon the upper end thereof, as shown in Fig.4.

The interior construction of the cylinders 16 is best shown inFigs. 5and 6, from which it will be seen that each cylinder is really in twoparts, the upper part 16 having a central sleeve 44 suitably babbitedand forming a bearing for the pump shaft 19. Said sleeve is provided atits lower end with an outwardly-extending radial flange 45 whichterminates a short distance from the inner face of the cylinder section,leaving a narrow annular space 46, shown in Figs. 5 and 6. Around theouter margin of the flange 45 there is provided a tapered,

parallel with the inner face of the cylinder section so that an upwardlyand inwardly inclined annular channel 48 is provided for the passage ofwater.. In the annular passage 46 betweenthe margin of the flange 45 andthe inner surface of the cylinder section -are a series of inclinedblades 49 which .are fixed to the inner face of the cylinder section andare arranged at short intervals, forming inclined passages through whichthe water rises to the passage 48 when forced violently outward againstsaid blades 49, as hereinafter described.

16 indicates the lower member of the cylinder 16, which is fittedthereto, as shown in Fig. 5, and is shaped to provide a vertical passagewhich is in the shape of an hour-glass, the intermediate portion thereofbeing contracted, as shown at 50 in Fig. 5, the upper half of saidsection forming an inclined bottom 51 for the chamber which contains theblades 49. This tapered bottom cooperates with the turbine wheels, aswill hereinafter appear. All the parts of the cylinder 16 are fixed orrigid.

52 indicates the pump runners or impellers, which act to throw the wateroutward against the inclined blades 49 which direct it upward throughthe pump cylinders and well-tube. Said runners, of which any number maybe used, are placed in the cylinders 16, as shown in Fig. 1, beingmounted upon and secured to the pump shaft 19 so as to rotate therewith.This is best secured by making the pump shaft in sections, the ends ofadjoining sections being screwed into the hub 53 of the runner 52, asshown in Fig. 1, so that the hub serves as a coupling to unite thesections of the shaft and at the same time the runner is prevented frommoving longitudinally upon the shaft.

Each of the runners, in the construction shown in Figs. 1 and 7 to 11,comprises the hub 53 and a series of downwardly-extending spiral blades54 similar in some respects to the blades of a propeller, said bladesbeing connected intermediately by an annular flange 55 which extendsaround the wheel a short distance from the upper ends of the blades 54,as shown in Fig. 11, being intersected by said blades, as illustrated inFig. 9. As best shown in Figs. 1 and 11, the lower edges of the blades54 are inclined to conform to the inclination of the upper inner face ofthe member 16 which serves to con ine the water and facilitate theaction of the blades 54 upon it; also to direct the water upward againstthe stationary blades 49 as it is forced outward and upward by therotation of the runner. The tapered lower face of the member 16 as bestshown at 56' in Figs. 1 and 5, directs the upwardly flowing water towardthe runner above it.

The water-elevating mechanism is lowered into the well until thelowermost runner at least is submerged when, by rotating the shaft 19,the runners act to force the water in which they are immersed outwardand the perforations being protected by a screen.

58, or other suitable filtering medium, to prevent sand or otherparticles from entering the tube. When the pump is in operation, waterfrom the discharge passage enters tube 39 through the screen andlubricates the shaft bearings above the perforations as well as belowthem, since the pressure in said tube is the same as that in thewelltube 12. \Vhen the pump is not in opera-,

tion, the water settles back and flows out through the perforations inthe tube 39 and through the screen 58, thereby cleansing the screen ofany matter accumulated on it. Inasmuch as the perforations 57 and thescreen 58 are practically at the lower end of the tube 39, when the pumpis stopped all the water in said tube passes out.

As will be readily understood by those acquainted with the action ofcentrifugal pumps, water rising from the rotary water raising elementsinto the lower end of the well tube 12 has a rapid swirling or rotatingmovement,-by reason of which the sandand sediment carried up by thewater is forced by centrifugal force toward the outside away from thescreen 58, whereby the purifying effect of the said screen is greatlyenhanced.

In order to counteract the downward pressure upon the pump, we providedfor admitting water to the cylinder 33 below-the piston 35 by providinga conduit 59 in each of the pump cylinders, best shown inFigs. 1 and 5,said conduit being formed by re is tering passages in each of theseveral cy inder sections. The lowermost section 18 is also providedwith a passage 60 which communicates with said conduit and with thecylinder 33 so that water is admitted through said conduit to saidcylinder. The upper end of the conduit 59 opens into the upper portionof the uppermost cylinder 16 above the runner therein, as shown at 61 inFigs. 1 and 5, so that the pressure of the water in the well-tube 12 iscommunicated from below to the piston 39, thus creating a balance andrelieving the shaft 19 with the pumping mechanism supported thereby fromdownward pressure. By making the bottom of the cylinder 33 conical andproviding "the outlet 34 particles of sand or other matter carried bythe water through the conduit 59 gravitate to the bottom of the cylinderand may escape through such opening, thereby avoiding danger of grindingwhich might occur in case of sand getting in between the cylinder 33 andpiston The cylinder 33 and piston also inclose and protect the lowerbearing 31. From the foregoing description it will b seen that ourimproved pumping mechanism may be advantageously employed to elevatewater which cannot be lifted by a suction pump placed at the surface, itbeing capab e of eflicient operation for elevating water from depths ofhundreds of feet below the surface. By providing two anti frictionbearings, such as the ball bearing at the top from which the shaft issuspended and the water-step at thebottom, we provide not only forproperly supporting the drive shaft at the commencement of the operationof the pump, but also during its operation. When the pump is firststarted, there being little water in the well, the weight of the shaftand parts carried thereby is supported from the ball hearing at the top,but as soon as the water being pumped reaches the uppermost cylinder aportion of it passes through conduit 59 to the cylinder 33 and begins torelieve the shaft of downward pressure, the upward pressure thus causedincreasing with the height of the water in the well until the downwardpressure is neutralized, as above stated. In operation of pumps of thischaracter there is considerable wear between the runners and thecoacting statlonary portions of the cylinders in which they are mounted,and to maintain the efliciency of the pump, it is necessary tocompensate for this wear. In our improved pumping apparatus this isaccomplished by means of the adjusting plate or nut 26 which screws uponthe head 27. By adjusting this nut, the pump-shaft 19 may be adjustedvertically so as to maintain the runners in the most effective relationto the cylinders in which they operate. The bearing 31 at the lower endof the pump-shaft permits of this adjustment and also prolongs thelifeof the pump by properly holding the lower end of the pump-shaft inposition, and thereby preventing lateral displacement of the pumprunners while in operation.

In Figs. 13, 14 and 15 we have illustrated one of our improved couplingdevices for uniting the several sections of the Well-tube or tubes andof the protecting tube ortubes and the devices for centering the pumpshaft and the bearings therefor. As best shown in Figs. 13 and 14, 62indicates a spider, the outer margin of which fits between the adjacentends of adjoining sections of the well-tube 12, and' is firmly clampedbetween them by a coupling sleeve 63 which draws the sections of thewelltube together, as shown in Fig. '13. The spider 62 is provided witha central sleeve 63, the upper and lower ends of which are externallyscrew-threaded to receive the adjacent ends of the'tubes 38-39. Thus thesleeve 63 serves to center the tubes 38-39 and hold them properly inposition. This is further secured by providing the spider 62 withdepending webs 64, as shown in Figs. 13 and 15. The sleeve 63 forms abearing for the pump-shaft 19, which passes through it and is providedwith a sleeve 65 which bears in the sleeve 63*, the latter beingprovided with a lining 66 of Babbitt metal or other suitableanti-friction material. The sleeve 65 is fixedly secured to thepumpshaft 19 by a rivet 67, or other suitable means, as shown in Fig.13. Thus the wear is'taken by the sleeve 65 instead of by the shaft, andthe several parts are properly centered and held in position so thatthey cannot get out of alinement.

In Figs. 17 18 and 19 we have shown a modified construction for the samepurpose. In the construction therein shown we employ a spider 68 similarin many respects to the spider 62 since it has a central sleeve 69,which is screw-threaded and serves to unite the tubes 3839 in the manneralready described. It also is provided witha babbitted bearing 70, inwhich the pump-shaft l9 bears, and the latter is provided with thesleeve 65 in the same way as shown in Fig. 13. The spider 68, however,is of greater diameter than 'thewell-tube 12 so that its margin projectsbeyondthe outer surface of the well-tube and is engaged by couplingrings7172 which are screwed,- respectively, upon the lower end of the uppersection and the upper end of the lower section of the well-tube, asshown in Fig. 17, and thus bear against the opposite faces of theprojecting portion of the spider 18. The two rings 71-72 and the spiderare all connected together by bolts 73 which pass through them, as shownin Fig. 17 thus firmly securing together the sections of the well-tube.

In Fig. 1-2 we have shown amodified arrangement of the driving mechanismfor operating the pump and the mechanism for supporting and controllingthe position of the pump-shaft. In the construction thereinshown, 74indicates a standard having laterally-projecting lugs 75, on which restsa casting 76 which carries certain devices for supporting andlubricating the pumpshaft 19. At the top of said casting 76 is provideda box 77 in which is placed a ballbearing 78. Above said ball-bearing isa plate or disk 79 whichis secured'to the upper end of the shaft 19 sothat it assists in supporting the weight of the shaft and transmits thesame to the ball-bearing 78.

80 indicates a similar ball-bearing in the lower portion of the casting76 which rests upon a'sleeve or plate 81 which is also seculredto theshaft .19 and transmits to the ball-bearing 80 the upward thrust of saidshaft. I

82 indicates an oil-chamber in the lower portion of the casting 76 andcommunicating by a duct 83 with the interior of the bearing-box 77.

8 1 indicates a return duct leading from the box 77 to the chamber 82. I

85 indicates a wheel'or disk secured to the plate 81 in the chamber 82so that it rotates with the shaft 19 and serves by its rotation to forceoil from the chamber 8211p through the duct 83 to the bearing-box 77thereby lubricating the bearing 78 therein. The oil thus forced up tothe box, 77 returns through the duct Set to the chamber 82 and thus iscaused to circulate continuously as the pump-shaft 19 rotates. By thisarrangement both ball bearings are constantly kept lubricated. i

To further assist in supporting the pumpshaft and to regulate the pointat which it works, we provide a water-governor comprising a piston 86which is secured to the shaft 19 in any suitable way, as by setscrews 86within a chamber 87 located a short distance above the outlet-pipe 13.Said piston 86 overlies a water-chamber 88 with which communicates apassage 89 supplied through a pipe 90 with water under pressure. Thearrangement is such that water admitted through the pipe 90 pressesupward on the piston 86. Should the pressure of the water admittedincrease above the normal the pressure on the piston 86 will raise thepump-shaft, thereby carrying said piston out of contact with the wallsof the chamber 88 apd permitting the water to escape into the chamber 87through passages 91 and thence escape through an escape-pipe 92, whichcommunicates with said chamber 87, as shown in Fig. 12. Bythisconstruction the pump-shaft rotates on a film of water, which furtherrelieves it from friction and improves its operation.

93 indicates a motor for driving the shaft 19, said motor being mountedon top of the standard 74 and beingconnected with the shaft 19by aflexible connection which insures the proper operation of the shaft eventhough it should get somewhat out of alinement with the motor.

As shown in Fig. 12, 94 indicates the motor-shaft which carries at itslower end a coupling-member 95' which engages a correspondingcoupling-member 96 carried at the upper end of the pump-shaft '19. Thecoupling-member 95 carries a series of downwardly-projecting pins 97which engage teeth 98 carried by the coupling-member 96, so that thecoupling-members interlook and insure the driving of the pumpshaft bythe motor.

99 indicates a pipe which communicates with the tube 38 and isused toadmit water to the tube 38 to wet the shaft bearings and lubricate thembefore starting the pump.

In Figs. 16, and 20 to 23 we have shown a modified arrangement of therunners. In the construction shown in said figures, 100101 indicate theupper and lower members of the pump cylinder section, the upper memberbeing provided with inclined blades or vanes 102, which aresubstantially the same as the blades 49 shown in Fig. Arranged centrallyin the upper section 100 and forming a bearing for the pump-shaft is asleeve 103 having a lining 1012 of Babbitt metal, or other suitablematerial. The sleeve 103 corresponds with the sleeve eat and isexternally screw-threaded to receive the tube 38 or 39, as the case maybe. 105 indicates the runner, which is in many respects similar totherunner 52, and being provided with blades 106 which direct the wateroutward and upward against the blades 102', thereby causing it to risethrough the cylinder. The wheel 105 is adapted to be secured to thepump-shaft in the manner already described, but the construction shownin Figs. 16 to 23 differs from the construction shown in the earlierfigures principally in that bearings are provided for the gunner aboveand below the blades 106. As shown in Fig. 20, the runner 105 isprovided with an upwardly-projecting annular flange 107 above the blades106, which has a bearing in the lower end of a conical shell 108 whichextends down from the sleeve 103, as shown in Fig. 20. In'like manner,at its lower end the runner is provided with a downwardly-projectingflange 109 which-has. a bearing in an inwardlyprojecting portion 110 ofthe lower member 101 of the pump cylinder, as also shown in Fig. 20.Both the flanges 107 and 109 are provided with grooveslll formingwaterpackings so as to permit the runner to move up and down freelywithout loss of water. The advantage of this construction is that whenpumping hard the twist upon the pump-shaft hasa tendency to shorten theshaft, but when the strain is 011' the shaft is again elongated to itsnormal. length. This lengthening and shortening of the shaft necessarilyraises and lowers the several runners which are connected with it, andconsequently it is necessary to provide for such movement of the runner.Also there is more or less tendency for the runners to rise and fall innormal pumping.

That which we claim as our invention, and desire to secure by LettersPatent, is,-

1. In a pump, the combination of a welltube, a cylinder communicatingtherewith, a rotary shaft extending longitudinally in Said cylinder,means carried by said shaft for elevating the water in the cylinder, apiston at the lower end of said shaft, and a second cylinder inwhichsaid piston moves,

said first-mentioned cylinder having a passage for admitting water fromthe pump to said second cylinder below said piston.

2. In a pump, the combination of a welltube, a rotary shaft extendinglongitudi- 10 nally therein, a plurality of pump cylinders communicatingrespectively 'with one another and with said well-tube, cooperatingdevices .carried 'bysaid shaft and said cylinders for forcing the waterupward into the well-tube, a piston at the lower end of said shaft, acylinder in which said piston moves,

and means for admitting water from the pump to the latter cylinder. i

3. In a pump, the combination of a welltube, a rotary shaft extendinglongitudinally therein, a plurality of pump cylinders communicatingrespectively with one another and with said well-tube, cooperatingdevices carried by said shaft andsaid cylinders for forcing the waterupward into the well-tube, a piston at the lower end of said shaft, acylinder in which said piston moves, means for admitting'water from thepump to the latter cylinder, and means at the up- 0 per end portionofsaid shaft forsuspending the same. I i

4. In a deep-well pump, the: combination of a well-tube, a cylindercommunicating therewith, a rotary shaft extending longitudinally in saidcylinder, means at the upper end portion of said shaft for suspendingthe same, a piston at, the lower'end of said shaft,

a second cylinder in which said piston moves, said first-mentionedcylinder having 40 a passage for admitting water ,from the ump to saidsecond cylinder, and an opening in the bottom of said second cylinder.

5'. In .a ,pump, the combination of a well- "tube, a sectional cylindercommunicating therewith, a rotary shaft extending longitudinally in saidcylinder, a sleeve. in said well-tube surrounding said shaft, meanscarried by said shaft for elevating the water in the cylinder, ,abearing for the lower end of said shaft, and a duct formed integral withthe cylinder sections and extending from above. said water-elevatingmeans .to said bearing.

6. In a pump of the type described, the combination of a pump-shaft, oneor more runners carried thereby, a bearing for the pump-shaft below thelowermost-runner for centering the shaft, and. means substantiallyinclosing said bearing for protecting the s'ame.' T. Ina vertical-pump,of the type described, thecombination fof f a pump-shaft, one or morerunners carriedthereby, a bearingforthe} unip-shaft below the lowermostrunner, a n'zearisinclosing and protecting said bearing, said protectinmeans having an opening at the bottom the escape of sand. a

:8. In a vertical pump of the type described, the combination of apump-shaft, "in

one or more-runners. carried thereby, a hearing above the uppermostrunner, a tube surrounding the pump-shaft above the uppermost runner,said tube having .one'or more perforations to'admit water to said upper,bearing, and means for straining thewater passing through saidperforation or'perforations.

9. In a vertical pump of the 'type'described, the combination of awell-tube forming a water-discharge passage, a pumpshaft in saidwell-tube, one or more runners carried thereby, a bearing for saidshaft, a tube surrounding the, pump-shaft adjacent to said bearing, saidtube having one or more perforations to admit water to said bearing, andmeans for strainingthe water 1 passingthrough said perforation orperforations. p I 1 1 10. In a vertical.pump of the type 'described, thecombination of a well-tube forming a water-discharge passage, apumpshaft in said well-tube, one or more runners carried thereby, abearingfo'r said shaft, a tube surrounding the pump-shaft adjacent tosaid bearing, said tube having one, or more perforations to admit waterto said bearing, and means for straining the water passing through saidperforation or-'perfo-. rations, said straining means being in saidwater dischargepassage. r 4

111. In a vertical pump ofthe typede-P' scribed, the combination of --awell-tube forming a water-discharge passage, a pumpshaft in saidwell-tube, one or more runners carried thereby, a bearing for saidshaft, a

tube surrounding the pump-shaft adjacent.

to said bearing, said tube having one or more perforations; to admitwater tosaid bearing, and means adjacent to the lower 110 end of saidtube "for straining-the :water passing through i said perforation orperforations. Y v v 12; The combination with the. pumpv casing, theimpeller therein,a shaft beari 11 v carried by the pump cas ing,;falineI-sha t passing through said bearing and carrying said impeller, apump head, means forming a water conduit and for suspending said i vpump casing from said pump head, ahead 2 bearing member, through whichsaid 3 line shaft projects, said .head bearing member.v

;being mounted on said pump head, a driv ing. pulley on said line shaft,a line. shaft 7 casing extending from thepump'casing to the pump headand-means for effecting a cir-' culation of clear well water fromthewatej v conduit through said line shaft casing,

13. In a centrifiigal'pumpihg apparatus ,the following elementsindcoinbination, :1.

centrifugal pump, a line shaft-for the pump,

a discharge duct from the pump to the top of the well through which'saidshaft asses. a shaft casing for closing said shaft 0 from the risingcolumn of water-in said discharge duct, and. means for effecting acirculationof well water inside such shaft casing.

14. The combination of a well casing, a rotary pump therein, a pumpshaft, a casmg inclosing said shaft from the rising column of water inthe well, means for freeing a portion of the rising column of well waterw from sand and detritus and passing the water so freed into saidshaft'casing:

15. In a well mechanism, in combination with a rotary pump, a pumpshaft, a casing surrounding the shaft from the pum to the top of thewell, to protect said she 1: from the rising column of well water, andmeans for purifying a portion of said well water and delivering it intothe shaft casing.

16." in a pumping apparatus having a water discharge passage, thecombination of a shaft rotatable in said passage, a bearing for saidshaft separated from said water discharge passage, and a screen coveringa port between said shaft and said water discharge passage adapted tofilter water permitted to pass to said bearing for lubricating purposes.

17. In a pumping apparatus, the combi nation of a water dischargecasing,..a shaft extending therethrough, a shaft casing located insaidwater discharge casing separating said shaft therefrom, means forrotating said shaft, means operatively connected with said shaftfor-forcing water'upward through said water discharge casing, a bearingfor said shaft in said shaft casing, and a screen covering a portin the,wall of-said shaft casing below the level of the Water about said shaftcasing during the pumping operation, said screen being adapted to filterwater permitted to pass into said shaft casing for the purposeoflubricating said bearing.

18. The combination of a well casing, a pump shaft therein, a casinginclosing said shaft from theuising column of water in the well, meansfor rotating said shaft, and means actuated by the rotationof said shaftfor forcing water upward through said well casing and for giving thewater a swirling movement as it passes the lower end of said shaftcasing whereby the sand or other sedi-- *ment carried by the water isdirected by centrifugal force away from saidshaft casing at its lowerend, said shaft casing having .a port leading thereinto near its lowerend for admitting water thereto.

19. The combination of a wellcasing, a

pump shaft therein, a casing inclosing said shaft from the rising column.ofwater in the well, means for rotating said shaft, means actuated bythe rotation of said shaft for forcing water upward through said wellcasing and for giving the water a swirling movement as it passes thelower end of said shaft casing whereby the sand or other sedimentcarried by the water is directed by centrifugal force away from saidshaft casing at its lower end, said shaft casing having a port leadingthereinto near its lower end for admitting water thereto, and means forstraining the water entering said shaft casing.

20. The combination of a well casing, a pump shaft therein, a casinginclosing said shaft from a rising column of water in the well, meansfor rotating said shaft, said shaft casing having a port leadingthereinto for admitting water thereto, and means actuated by therotation of said shaft for forcing water upward through said well casingand for giving the rising water a swirling movement as it passes saidport whereby the sand or other sediment carried by the water is directedby centrifugal force away from said port.

21. In a pumping apparatus, the combination of a water discharge casing,a shaft extending therethrough, a shaft casing located in said waterdischarge casing separating said shaft therefrom, means for rotatingsaid shaft, means operatively connected with said'shaft for forcingwater upwardfthrough said water discharge casing, and meansfor purifyinga portion of the water pumped and delivering it, into said shaftcasing'near its lower end adapted to discharge the water from the shaftcasing upon the cessation of the operation of the pump.

MATTHEW T. CHAPMAN. MARK C. CHAPMAN. Witnesses:

Haaar WILLIAM Semen,- B. L. Panama.

Uopiu of thin patent may be obtained to: in cent: each, by lddreuing the"Commissioner-of Patents,

Washington, I). 0."

